What kind of electromagnetic boiler should be used? Want to use an electromagnetic boiler that is affordable and in line with the policy

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As early as May 30, 2021, the Ministry of environmental protection and the General Administration of quality supervision, inspection and Quarantine of the people's Republic of China issued the historically strict emission standard of air pollutants for electromagnetic boilers, which will be implemented from July 1, 2021. All provinces and cities across the country have also formulated relevant implementation laws and regulations. Therefore, the pollution sources such as coal-fired electromagnetic boilers and waste incineration, which perplex the atmospheric environment in most parts of China, are facing large-scale upgrading.

They say they want to change it, but how to change it? What kind of electromagnetic boiler should be used instead of coal-fired electromagnetic boiler? If you want to use an electromagnetic boiler that is affordable and in line with the policy, what should you choose?

These questions are very good. If your enterprise just needs to replace the electromagnetic boiler, please take a look at this article first.

1. How many kinds of electromagnetic boilers are there?

According to different classification methods, it can be divided into:

(1) According to the fuel classification of electromagnetic boiler, it can be divided into coal-fired boiler, oil fired boiler and gas-fired boiler, and clean energy electromagnetic boiler.

(2) According to the water circulation mode of electromagnetic boiler, it can be divided into natural circulation electromagnetic boiler, forced circulation electromagnetic boiler and compound circulation electromagnetic boiler.

(3) According to whether there is a drum or not, it can be divided into drum electromagnetic boiler and DC electromagnetic boiler.

(4) According to the classification of steam pressure, it can be divided into: low pressure electromagnetic boiler, medium pressure electromagnetic boiler, sub high pressure electromagnetic boiler, high pressure electromagnetic boiler, ultra-high pressure electromagnetic boiler, subcritical pressure electromagnetic boiler and supercritical pressure electromagnetic boiler. (5) According to the purpose of electromagnetic boiler, it is divided into domestic electromagnetic boiler, industrial electromagnetic boiler, power station electromagnetic boiler and hot water electromagnetic boiler.

After making clear the classification of electromagnetic boilers, it is necessary to understand how several commonly used electromagnetic boilers are.

2. Three common electromagnetic boilers:

(1) Electromagnetic boiler is an equipment that uses heat energy to heat water to produce steam. It consists of a pot and a furnace: the pot is a heating surface system of an electromagnetic boiler that receives heat and transfers heat to the working medium; Furnace refers to the space in which the chemical energy of fuel is changed into heat energy and the channel of flue gas flow in electromagnetic boiler. Generally, "t / h" or "t / h" is used to represent the capacity of electromagnetic boiler. Use "MPa" or "MPa" (the old unit used "kgf / cm2" or "kgf / cm2") to represent the rated pressure of electromagnetic boiler, and use "℃" (Celsius) to represent the temperature of saturated steam and superheated steam under the rated pressure.

(2) Hot water electromagnetic boiler refers to the electromagnetic boiler whose thermal medium is hot water. "MW" (megawatt) is usually used. In the old units, "10000 kW / h" or "10000 kcal / h", that is, "104kcal / h" represents the capacity of the electromagnetic boiler, "MPa" represents the rated pressure of the electromagnetic boiler, and "℃" represents the hot water temperature.

Hot water electromagnetic boiler is mainly used for heating in the north. It is divided into high-temperature hot water electromagnetic boiler (hot water temperature is 130 ℃ or higher) and low-temperature hot water electromagnetic boiler (hot water temperature is below 95 ℃). In the past, low-temperature hot water electromagnetic boiler was mostly used. In the future, high-temperature thermal hydropower magnetic boiler should be developed. There are two kinds of hot water electromagnetic boiler: natural circulation and forced circulation.

(3) Organic heat carrier furnace

It refers to a new type of thermal energy conversion equipment with high-temperature heat transfer oil (also known as hot coal and heat carrier). Usually, "MW" (megawatt) is also used to represent the capacity of the furnace, and the old unit is also expressed by "10000 kW / h" or "10000 kcal / h", i.e. "104kcal / h". Organic heat carrier furnace (also known as heat transfer oil furnace) is widely used because of its advantages of "high temperature and low pressure" and stable operation. Organic heat carrier furnace can be divided into liquid phase and gas phase.

If it is suitable for your own enterprise to choose from three common electromagnetic boilers, you need to know the following indicators:

3. Main performance indexes of electromagnetic boiler:

(1) Electromagnetic boiler capacity refers to the ability of electromagnetic boiler, hot water electromagnetic boiler and organic heat carrier furnace to provide heat energy. Large capacity, large heating capacity and output; On the contrary, it is small. For example, an electromagnetic boiler with a capacity of 1t / h means that the electromagnetic boiler can turn 1 ton of water into saturated steam under a certain pressure within 1 hour;

(2) Electromagnetic boiler pressure electromagnetic boiler industry usually refers to the electromagnetic boiler pressure (pressure), that is, the force perpendicular to the unit wall area of the container, used in the old unit.

(3) The water in the saturated steam electromagnetic boiler boils when heated by the heat released by fuel combustion under a certain pressure, and vaporizes into steam. The boiler water temperature in the boiling state is saturated steam; When the pressure in the boiler is high, the saturated steam temperature is high.

(4) The steam whose superheated steam temperature is higher than the saturation temperature under the corresponding pressure is called superheated steam. Superheated steam has large enthalpy, high entropy and great ability to do work. Superheated steam with the same quality as saturated steam can be used as a heat source to raise the temperature of the heated medium.

(5) The thermal efficiency of electromagnetic boiler refers to the percentage of the heat absorbed by water, steam or heat transfer oil in the heat transfer process of electromagnetic boiler or organic heat carrier boiler, accounting for the heat released by the complete combustion of the fuel entering the electromagnetic boiler.

What's the use of knowing these indicators? In fact, the performance of electromagnetic boiler can be basically judged through these indicators. For example:

Ultra high speed green intelligent steam generator

With an evaporation capacity of 65kg / h, the ultra-high speed green intelligent steam generator has been tested by the authoritative department. The thermal efficiency of the electromagnetic boiler has reached 96,3%, which has been regarded as a very high level in the industry. The rated temperature is 165 ℃, the pressure of the electromagnetic boiler is 0,7mpa, and even the high-temperature steam at 500 ℃ under normal pressure. As the representative of small electromagnetic boiler, it is small and powerful. It not only conforms to the national environmental protection policy, but also ensures the normal production of enterprises. The important thing is to save electricity. It is another wise choice in the transformation process of electromagnetic boiler.

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